The RG400 is a high temperature coax cable used in a vast array of military and commercial applications. With a high temperature maximum of 200°C, in line with other coax cables like the RG142 Cable, this allows installation in heat sensitive environments.

Standard cable for radio installations. Double shielded stranded conductor, MIL-DTL-17 spec.

Approved for certified aircraft.

RG 400 Applications:

The RG400 cable is extensively and reliably used in the following types of projects:

• Radio frequency
• Telecommunications Applications
• Radio Systems
• Test Cables
• Signal Transfer Applications
• Interconnects

RG 400 Cable is also approved for direct burial.  Whether it's being used in an in-flight entertainment system or a telecommunications application it is a very versatile coax cable to use commercially and militarily.

Per specification, RG400 coax cable will have splices. If continuous lengths are needed, please alert your Allied Wire & Cable Representative.

RG-400 Specs

RG 400 Coax Cable Electrical Specifications

• Impedance: 50 +/-2 (ohms)
• Capacitance: 29.4 (pF/ft)
• Maximum Voltage: 1900 (vms)
• Maximum Frequency: 12.4 GHz
• Minimum Temperature: -55°C
• Maximum Temperature : 200°C
• Mil-Spec Equivalent : M17/128-RG400 Cable
• Bend Radius : 1.0"
• Weight : 50 lbs/mft

RG 400 Cable Construction

• Conductor (Inner Conductor): Silver Covered Copper 
• Dielectric: Solid Polytetrafluoroethylene (PTFE)
• Shield (Outer Conductor): Double Silver Covered Copper Shields
• Jacket: Flourinated Ethylene Propylene (FEP) Type IX per MIL-C-17

RG 400 Diameter

• Center Conductor: 0.0384" (19/.008")
• Dielectric Diameter: 0.116"
• Shield Diameter: 0.156"
• Overall Diameter: 0.195"

RG 400 Loss (Attenuation) & Power Handling

Freq. (MHz)	Typical	Max
100	4.1	4.5 dB/100ft.
400	8.6	10.5 dB/100ft.
1000	14.2	18.1 dB/100ft.
2400	23.6	30.2 dB/100ft.
5000	37.0	52.1 dB/100ft.
10000	57.8	78.0 dB/100ft.